Scattering of position-dependent mass Schrödinger equation with delta potential Hassan Hassanabadi, Won Sang Chung, Soroush Zare and Motahareh Alimohammadi Eur. Phys. J. Plus, 132 3 (2017) 135 Published online: 22 March 2017 DOI: 10.1140/epjp/i2017-11422-0